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Vulnerability details: VCID-mwyu-5rk2-xbbz
Vulnerability ID VCID-mwyu-5rk2-xbbz
Aliases CVE-2015-2721
Summary Multiple vulnerabilities have been found in Mozilla Firefox and Thunderbird, the worst of which may allow user-assisted execution of arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-358 Improperly Implemented Security Check for Standard
System Score Found at
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
epss 0.00607 https://api.first.org/data/v1/epss?cve=CVE-2015-2721
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2015-71
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-2721.json
https://api.first.org/data/v1/epss?cve=CVE-2015-2721
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2721
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2724
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2728
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2730
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2731
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2734
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2735
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2736
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2737
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2738
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2740
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2743
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4000
1236967 https://bugzilla.redhat.com/show_bug.cgi?id=1236967
GLSA-201512-10 https://security.gentoo.org/glsa/201512-10
GLSA-201605-06 https://security.gentoo.org/glsa/201605-06
GLSA-201701-46 https://security.gentoo.org/glsa/201701-46
mfsa2015-71 https://www.mozilla.org/en-US/security/advisories/mfsa2015-71
RHSA-2015:1185 https://access.redhat.com/errata/RHSA-2015:1185
RHSA-2015:1664 https://access.redhat.com/errata/RHSA-2015:1664
USN-2656-1 https://usn.ubuntu.com/2656-1/
USN-2656-2 https://usn.ubuntu.com/2656-2/
USN-2672-1 https://usn.ubuntu.com/2672-1/
USN-2673-1 https://usn.ubuntu.com/2673-1/
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.69606
EPSS Score 0.00607
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:01:37.810747+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201512-10 38.0.0